搜题，就来89问答库The purpose of the ashing step in graphite-furnace atomic-absorption spec-troscopy is to（）
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The purpose of the ashing step in graphite-furnace atomic-absorption spec-troscopy is to（）
- A: Vaporize metal atoms to be analyzed
- B: Cause the metal species to form carbides which are more volatile
- C: Convert the graphite furnace to ash to avoid carbide formation
- D: Burn off organic species that would interfere with the elemental analysis
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